Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders

Y. F. Wu; Y. F. Lu; G. Yan; J. S. Li; Y. Feng; H. P. Tang; S. K. Chen; H. L. Xu; C. S. Li; P. X. Zhang

doi:10.1088/0953-2048/19/11/021

Improved superconducting properties in bulk MgB₂ prepared by high-energy milling of Mg and B powders

Y. F. Wu, Y. F. Lu, G. Yan, J. S. Li, Y. Feng, H. P. Tang, S. K. Chen, H. L. Xu, C. S. Li, P. X. Zhang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

MgB₂ bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB₂ bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB ₂ with good grain connectivity and high J_c performance. The critical current density reaches 2.0 × 10⁶Acm^-2 at 15K and 0.59T, 5.7 × 10⁵Acm^-2 at 2T and 3.0 × 10⁴Acm^-2 at 5T.

Original language	English
Article number	021
Pages (from-to)	1215-1218
Number of pages	4
Journal	Superconductor Science and Technology
Volume	19
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/19/11/021
State	Published - 1 Nov 2006

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title = "Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders",

abstract = "MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.",

author = "Wu, {Y. F.} and Lu, {Y. F.} and G. Yan and Li, {J. S.} and Y. Feng and Tang, {H. P.} and Chen, {S. K.} and Xu, {H. L.} and Li, {C. S.} and Zhang, {P. X.}",

year = "2006",

month = nov,

day = "1",

doi = "10.1088/0953-2048/19/11/021",

language = "英语",

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journal = "Superconductor Science and Technology",

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TY - JOUR

T1 - Improved superconducting properties in bulk MgB2 prepared by high-energy milling of Mg and B powders

AU - Wu, Y. F.

AU - Lu, Y. F.

AU - Yan, G.

AU - Li, J. S.

AU - Feng, Y.

AU - Tang, H. P.

AU - Chen, S. K.

AU - Xu, H. L.

AU - Li, C. S.

AU - Zhang, P. X.

PY - 2006/11/1

Y1 - 2006/11/1

N2 - MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.

AB - MgB2 bulks were prepared by high-energy milling of Mg and B powders. The correlations between milling times, microstructure and superconducting properties were investigated in MgB2 bulks. The samples were characterized by x-ray diffraction (XRD), energy dispersive spectrometry (EDX) and scanning electron microscopy (SEM), and the magnetization properties were examined with a superconducting quantum interference device (SQUID) magnetometer. The investigations showed that high-energy milling is an effective approach for obtaining fine crystalline (40-100nm) bulk MgB 2 with good grain connectivity and high Jc performance. The critical current density reaches 2.0 × 106Acm-2 at 15K and 0.59T, 5.7 × 105Acm-2 at 2T and 3.0 × 104Acm-2 at 5T.

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U2 - 10.1088/0953-2048/19/11/021

DO - 10.1088/0953-2048/19/11/021

M3 - 文章

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SN - 0953-2048

VL - 19

SP - 1215

EP - 1218

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 11

M1 - 021

ER -

Improved superconducting properties in bulk MgB₂ prepared by high-energy milling of Mg and B powders

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